3a^2-30a=2

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Solution for 3a^2-30a=2 equation:


Simplifying
3a2 + -30a = 2

Reorder the terms:
-30a + 3a2 = 2

Solving
-30a + 3a2 = 2

Solving for variable 'a'.

Reorder the terms:
-2 + -30a + 3a2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + -30a + 3a2 = 0

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
-0.6666666667 + -10a + a2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + -10a + 0.6666666667 + a2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + -10a + a2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + -10a + a2 = 0 + 0.6666666667
-10a + a2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
-10a + a2 = 0.6666666667

The a term is -10a.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10a + 25 + a2 = 0.6666666667 + 25

Reorder the terms:
25 + -10a + a2 = 0.6666666667 + 25

Combine like terms: 0.6666666667 + 25 = 25.6666666667
25 + -10a + a2 = 25.6666666667

Factor a perfect square on the left side:
(a + -5)(a + -5) = 25.6666666667

Calculate the square root of the right side: 5.066228051

Break this problem into two subproblems by setting 
(a + -5) equal to 5.066228051 and -5.066228051.

Subproblem 1

a + -5 = 5.066228051 Simplifying a + -5 = 5.066228051 Reorder the terms: -5 + a = 5.066228051 Solving -5 + a = 5.066228051 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + a = 5.066228051 + 5 Combine like terms: -5 + 5 = 0 0 + a = 5.066228051 + 5 a = 5.066228051 + 5 Combine like terms: 5.066228051 + 5 = 10.066228051 a = 10.066228051 Simplifying a = 10.066228051

Subproblem 2

a + -5 = -5.066228051 Simplifying a + -5 = -5.066228051 Reorder the terms: -5 + a = -5.066228051 Solving -5 + a = -5.066228051 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + a = -5.066228051 + 5 Combine like terms: -5 + 5 = 0 0 + a = -5.066228051 + 5 a = -5.066228051 + 5 Combine like terms: -5.066228051 + 5 = -0.066228051 a = -0.066228051 Simplifying a = -0.066228051

Solution

The solution to the problem is based on the solutions from the subproblems. a = {10.066228051, -0.066228051}

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